|Quadrangle map, 1:250,000-scale||CR|
|Quadrangle map, 1:63,360-scale||C-3|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The location of this prospect is uncertain. It is known only from a small map in Wright and Wright (1908) that is nearly impossible to reconcile with modern topographic maps. For this record, the site is about 4.9 miles west of the mouth of the creek that enters the west end of Salmon Lake. It is at an elevation of about 2,000 feet, about 0.5 mile west-northwest of the center of section 34, T. 72 S., R. 82 E. The actual location of the prospect, however, may be several miles or more from this site.|
Geologic descriptionThis deposit consists of a quartz vein containing pyrite, chalcopyrite, galena, and sphalerite (Wright and Wright, 1908). The vein is 6 inches to 4 feet wide, strikes N65W, and dips 60 W to vertical. It cuts gabbro and amphibolite that may be part of a large Cretaceous intrusion near Pin Peak (Eberlein and others, 1983; Brew, 1996). A tunnel at an elevation of about 2,000 feet is 130 feet long.
|Geologic map unit||(-132.834668559924, 55.5849060138642)|
|Mineral deposit model||Polymetallic vein? (Cox and Singer, 1986; model 22c).|
|Mineral deposit model number||22c?|
|Workings or exploration||The only working is a 130-foot tunnel.|
|Indication of production||None|
Additional commentsThe prospect is probably in the Karta River Wilderness, which is closed to prospecting and mining.
Brew, D.A., 1996, Geologic map of the Craig, Dixon Entrance, and parts of the Ketchikan and Prince Rupert quadrangles, southeastern Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2319, 53 p., 1 sheet, scale 1:250,000.
Brooks, A.H., 1902, Preliminary report on the Ketchikan mining district, Alaska, with an introductory sketch of the geology of southeastern Alaska: U.S. Geological Survey Professional Paper 1, 120 p.
Bufvers, John, 1967, History of mines and prospects, Ketchikan district, prior to 1952: Alaska Division of Mines and Minerals Special Report 1, 32 p.
Cobb, E. H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Craig quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-869, 262 p.
Eberlein, G.D., Churkin, Michael, Jr., Carter, Claire, Berg, H.C., and Ovenshine, A. T., 1983, Geology of the Craig quadrangle, Alaska: U.S. Geological Survey Open-File Report 83-91, 52 p.
|Reporters||D.J. Grybeck (Applied Geology)|
|Last report date||5/1/2004|